projects / mirror_frr.git / blame
| Commit | Line | Data |
|---|---|---|
| 718e3744 | 1 | /* |
| 2 | * OSPF calculation. | |
| 3 | * Copyright (C) 1999 Kunihiro Ishiguro | |
| 4 | * | |
| 5 | * This file is part of GNU Zebra. | |
| 6 | * | |
| 7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
| 8 | * under the terms of the GNU General Public License as published by the | |
| 9 | * Free Software Foundation; either version 2, or (at your option) any | |
| 10 | * later version. | |
| 11 | * | |
| 12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * General Public License for more details. | |
| 16 | * | |
| 896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; see the file COPYING; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
| 718e3744 | 20 | */ |
| 21 | ||
| 9c27ef9b PJ |
22 | #ifndef _QUAGGA_OSPF_SPF_H |
| 23 | #define _QUAGGA_OSPF_SPF_H | |
| 24 | ||
| 630e4807 | 25 | /* values for vertex->type */ |
| 26 | #define OSPF_VERTEX_ROUTER 1 /* for a Router-LSA */ | |
| 27 | #define OSPF_VERTEX_NETWORK 2 /* for a Network-LSA */ | |
| 718e3744 | 28 | |
| 630e4807 | 29 | /* values for vertex->flags */ |
| 718e3744 | 30 | #define OSPF_VERTEX_PROCESSED 0x01 |
| 31 | ||
| 630e4807 | 32 | /* The "root" is the node running the SPF calculation */ |
| 718e3744 | 33 | |
| 630e4807 | 34 | /* A router or network in an area */ |
| 718e3744 | 35 | struct vertex |
| 36 | { | |
| 37 | u_char flags; | |
| 630e4807 | 38 | u_char type; /* copied from LSA header */ |
| 39 | struct in_addr id; /* copied from LSA header */ | |
| 40 | struct lsa_header *lsa; /* Router or Network LSA */ | |
| eb3da6df | 41 | int *stat; /* Link to LSA status. */ |
| 42 | u_int32_t distance; /* from root to this vertex */ | |
| 43 | struct list *parents; /* list of parents in SPF tree */ | |
| 44 | struct list *children; /* list of children in SPF tree*/ | |
| 718e3744 | 45 | }; |
| 46 | ||
| 630e4807 | 47 | /* A nexthop taken on the root node to get to this (parent) vertex */ |
| 718e3744 | 48 | struct vertex_nexthop |
| 49 | { | |
| 630e4807 | 50 | struct ospf_interface *oi; /* output intf on root node */ |
| 51 | struct in_addr router; /* router address to send to */ | |
| eb3da6df | 52 | }; |
| 53 | ||
| 54 | struct vertex_parent | |
| 55 | { | |
| 56 | struct vertex_nexthop *nexthop; /* link to nexthop info for this parent */ | |
| 57 | struct vertex *parent; /* parent vertex */ | |
| 58 | int backlink; /* index back to parent for router-lsa's */ | |
| 718e3744 | 59 | }; |
| 60 | ||
| d3a9c768 PJ |
61 | /* What triggered the SPF ? */ |
| 62 | typedef enum { | |
| 63 | SPF_FLAG_ROUTER_LSA_INSTALL = 1, | |
| 64 | SPF_FLAG_NETWORK_LSA_INSTALL, | |
| 65 | SPF_FLAG_SUMMARY_LSA_INSTALL, | |
| 66 | SPF_FLAG_ASBR_SUMMARY_LSA_INSTALL, | |
| 67 | SPF_FLAG_MAXAGE, | |
| 68 | SPF_FLAG_ABR_STATUS_CHANGE, | |
| 69 | SPF_FLAG_ASBR_STATUS_CHANGE, | |
| 70 | SPF_FLAG_CONFIG_CHANGE, | |
| 71 | } ospf_spf_reason_t; | |
| 72 | ||
| 73 | extern void ospf_spf_calculate_schedule (struct ospf *, ospf_spf_reason_t); | |
| 4dadc291 | 74 | extern void ospf_rtrs_free (struct route_table *); |
| 718e3744 | 75 | |
| 76 | /* void ospf_spf_calculate_timer_add (); */ | |
| 9c27ef9b | 77 | #endif /* _QUAGGA_OSPF_SPF_H */ |